Also, those errors about chunk sizes aren't fatal, they just concern the videos. The graphics have already been extracted at that point. War1gus.exe on Windows will only work if you have also installed Stratagus AND you run as Administrator.

If you did all of these and it still didn't run, please check your stratagus install dir for files called stderr.txt and stdout.txt and post their contents (if any). Please also verify that there are indeed graphics files in the war1gus installation folder.